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Bison breeding success for Cemex

One of the first 100% native bison calves at the El Carmen Nature Reserve
One of the first 100% native bison calves at the El Carmen Nature Reserve

Cemex achieve first 100% native bison offspring at El Carmen Nature Reserve on the Mexican/US border

CEMEX’s conservation efforts in the El Carmen Nature Reserve have completed the first breeding cycle of the American bison, which means that in 2023, the initiative has achieved the first 100% native offspring at the ecological reserve.

In collaboration with AES México, FMCN, the Coahuila Environment Secretariat, and CONANP, the company reintroduced specimens of this endangered mammal in its reserve to facilitate the restoration of grasslands and mitigate climate change.


The latest offspring are descended from other calves born in the natural reserve during 2020, whose parents were the first mammals of this type to arrive in El Carmen as part of the effort to conserve the species. The new calves are said to behave like wild bison in their natural habitat.

The reintroduction of the American bison is one of Cemex’s main projects in terms of biodiversity and sustainability since it is a critical species in ecosystems which favour the restoration of grasslands and generate greater CO2 capture.

El Carmen has 140,000ha of natural surface area where around 12 million tonnes of CO2 are stored, contributing to climate change mitigation.

Located in the northern part of the state of Coahuila, Mexico, and southern Texas, in the US, the reserve is home to more than 1,500 species of plants, 289 species of birds, 80 species of reptiles and amphibians, and 78 species of mammals, including some endemic species.

El Carmen is a legacy of the conservation of biodiversity in Mexico. It is part of the Water and Biodiversity pillar of Cemex’s Future in Action programme – the company’s initiative to mitigate its carbon footprint.


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